Birthday worksheet

1. Days until your next birthday: 363 days

1. Find your next birthday. This year's birthday has already passed, so it's next year's

   $\text{Next birthday: Dec 11, 2025}$

2. Count the days from the counting-from date to that birthday

   $\text{Dec 11, 2025}\text{−}\text{Dec 13, 2024}$$=363\text{\hspace{0.17em}days}$

3. Take your birth year from the birthday's year to get the age you'll turn

   $\mathrm{2,025}-\mathrm{1,995}$$=30$

4. Split the days into whole weeks. The leftover days tell you how many weekdays to move on from Friday

   $363\text{\hspace{0.17em}days}$$=51\times 7+6$$=\text{Thursday}$

5. For the half birthday, move 6 months on from the birthday

   $\text{Dec 11 + 6 months → Jun 11, 2025}$

6. Count the days to the half birthday

   $\text{Jun 11, 2025}\text{−}\text{Dec 13, 2024}$$=180\text{\hspace{0.17em}days}$

2. Days until your next birthday: 230 days

1. Find your next birthday. This year's birthday hasn't happened yet

   $\text{Next birthday: Sep 22, 2027}$

2. Count the days from the counting-from date to that birthday

   $\text{Sep 22, 2027}\text{−}\text{Feb 4, 2027}$$=230\text{\hspace{0.17em}days}$

3. Take your birth year from the birthday's year to get the age you'll turn

   $\mathrm{2,027}-\mathrm{1,995}$$=32$

4. Split the days into whole weeks. The leftover days tell you how many weekdays to move on from Thursday

   $230\text{\hspace{0.17em}days}$$=32\times 7+6$$=\text{Wednesday}$

5. For the half birthday, move 6 months on from the birthday

   $\text{Sep 22 + 6 months → Mar 22, 2027}$

6. Count the days to the half birthday

   $\text{Mar 22, 2027}\text{−}\text{Feb 4, 2027}$$=46\text{\hspace{0.17em}days}$

3. Days until your next birthday: 47 days

1. Find your next birthday. This year's birthday hasn't happened yet

   $\text{Next birthday: Sep 9, 2025}$

2. Count the days from the counting-from date to that birthday

   $\text{Sep 9, 2025}\text{−}\text{Jul 24, 2025}$$=47\text{\hspace{0.17em}days}$

3. Take your birth year from the birthday's year to get the age you'll turn

   $\mathrm{2,025}-\mathrm{1,996}$$=29$

4. Split the days into whole weeks. The leftover days tell you how many weekdays to move on from Thursday

   $47\text{\hspace{0.17em}days}$$=6\times 7+5$$=\text{Tuesday}$

5. For the half birthday, move 6 months on from the birthday

   $\text{Sep 9 + 6 months → Mar 9, 2026}$

6. Count the days to the half birthday

   $\text{Mar 9, 2026}\text{−}\text{Jul 24, 2025}$$=228\text{\hspace{0.17em}days}$

4. Days until your next birthday: 141 days

1. Find your next birthday. This year's birthday hasn't happened yet

   $\text{Next birthday: Nov 29, 2026}$

2. Count the days from the counting-from date to that birthday

   $\text{Nov 29, 2026}\text{−}\text{Jul 11, 2026}$$=141\text{\hspace{0.17em}days}$

3. Take your birth year from the birthday's year to get the age you'll turn

   $\mathrm{2,026}-\mathrm{1,995}$$=31$

4. Split the days into whole weeks. The leftover days tell you how many weekdays to move on from Saturday

   $141\text{\hspace{0.17em}days}$$=20\times 7+1$$=\text{Sunday}$

5. For the half birthday, move 6 months on from the birthday

   $\text{Nov 29 + 6 months → May 29, 2027}$

6. Count the days to the half birthday

   $\text{May 29, 2027}\text{−}\text{Jul 11, 2026}$$=322\text{\hspace{0.17em}days}$

5. Days until your next birthday: 138 days

1. Find your next birthday. This year's birthday hasn't happened yet

   $\text{Next birthday: Jul 3, 2027}$

2. Count the days from the counting-from date to that birthday

   $\text{Jul 3, 2027}\text{−}\text{Feb 15, 2027}$$=138\text{\hspace{0.17em}days}$

3. Take your birth year from the birthday's year to get the age you'll turn

   $\mathrm{2,027}-\mathrm{1,995}$$=32$

4. Split the days into whole weeks. The leftover days tell you how many weekdays to move on from Monday

   $138\text{\hspace{0.17em}days}$$=19\times 7+5$$=\text{Saturday}$

5. For the half birthday, move 6 months on from the birthday

   $\text{Jul 3 + 6 months → Jan 3, 2028}$

6. Count the days to the half birthday

   $\text{Jan 3, 2028}\text{−}\text{Feb 15, 2027}$$=322\text{\hspace{0.17em}days}$

6. Days until your next birthday: 201 days

1. Find your next birthday. This year's birthday hasn't happened yet

   $\text{Next birthday: Jul 26, 2026}$

2. Count the days from the counting-from date to that birthday

   $\text{Jul 26, 2026}\text{−}\text{Jan 6, 2026}$$=201\text{\hspace{0.17em}days}$

3. Take your birth year from the birthday's year to get the age you'll turn

   $\mathrm{2,026}-\mathrm{1,995}$$=31$

4. Split the days into whole weeks. The leftover days tell you how many weekdays to move on from Tuesday

   $201\text{\hspace{0.17em}days}$$=28\times 7+5$$=\text{Sunday}$

5. For the half birthday, move 6 months on from the birthday

   $\text{Jul 26 + 6 months → Jan 26, 2026}$

6. Count the days to the half birthday

   $\text{Jan 26, 2026}\text{−}\text{Jan 6, 2026}$$=20\text{\hspace{0.17em}days}$

7. Days until your next birthday: 16 days

1. Find your next birthday. This year's birthday hasn't happened yet

   $\text{Next birthday: Nov 15, 2025}$

2. Count the days from the counting-from date to that birthday

   $\text{Nov 15, 2025}\text{−}\text{Oct 30, 2025}$$=16\text{\hspace{0.17em}days}$

3. Take your birth year from the birthday's year to get the age you'll turn

   $\mathrm{2,025}-\mathrm{1,994}$$=31$

4. Split the days into whole weeks. The leftover days tell you how many weekdays to move on from Thursday

   $16\text{\hspace{0.17em}days}$$=2\times 7+2$$=\text{Saturday}$

5. For the half birthday, move 6 months on from the birthday

   $\text{Nov 15 + 6 months → May 15, 2026}$

6. Count the days to the half birthday

   $\text{May 15, 2026}\text{−}\text{Oct 30, 2025}$$=197\text{\hspace{0.17em}days}$

8. Days until your next birthday: 302 days

1. Find your next birthday. This year's birthday has already passed, so it's next year's

   $\text{Next birthday: Feb 10, 2026}$

2. Count the days from the counting-from date to that birthday

   $\text{Feb 10, 2026}\text{−}\text{Apr 14, 2025}$$=302\text{\hspace{0.17em}days}$

3. Take your birth year from the birthday's year to get the age you'll turn

   $\mathrm{2,026}-\mathrm{1,995}$$=31$

4. Split the days into whole weeks. The leftover days tell you how many weekdays to move on from Monday

   $302\text{\hspace{0.17em}days}$$=43\times 7+1$$=\text{Tuesday}$

5. For the half birthday, move 6 months on from the birthday

   $\text{Feb 10 + 6 months → Aug 10, 2025}$

6. Count the days to the half birthday

   $\text{Aug 10, 2025}\text{−}\text{Apr 14, 2025}$$=118\text{\hspace{0.17em}days}$

9. Days until your next birthday: 200 days

1. Find your next birthday. This year's birthday hasn't happened yet

   $\text{Next birthday: Aug 22, 2025}$

2. Count the days from the counting-from date to that birthday

   $\text{Aug 22, 2025}\text{−}\text{Feb 3, 2025}$$=200\text{\hspace{0.17em}days}$

3. Take your birth year from the birthday's year to get the age you'll turn

   $\mathrm{2,025}-\mathrm{1,995}$$=30$

4. Split the days into whole weeks. The leftover days tell you how many weekdays to move on from Monday

   $200\text{\hspace{0.17em}days}$$=28\times 7+4$$=\text{Friday}$

5. For the half birthday, move 6 months on from the birthday

   $\text{Aug 22 + 6 months → Feb 22, 2025}$

6. Count the days to the half birthday

   $\text{Feb 22, 2025}\text{−}\text{Feb 3, 2025}$$=19\text{\hspace{0.17em}days}$

10. Days until your next birthday: 295 days

1. Find your next birthday. This year's birthday has already passed, so it's next year's

   $\text{Next birthday: Jun 8, 2027}$

2. Count the days from the counting-from date to that birthday

   $\text{Jun 8, 2027}\text{−}\text{Aug 17, 2026}$$=295\text{\hspace{0.17em}days}$

3. Take your birth year from the birthday's year to get the age you'll turn

   $\mathrm{2,027}-\mathrm{1,995}$$=32$

4. Split the days into whole weeks. The leftover days tell you how many weekdays to move on from Monday

   $295\text{\hspace{0.17em}days}$$=42\times 7+1$$=\text{Tuesday}$

5. For the half birthday, move 6 months on from the birthday

   $\text{Jun 8 + 6 months → Dec 8, 2026}$

6. Count the days to the half birthday

   $\text{Dec 8, 2026}\text{−}\text{Aug 17, 2026}$$=113\text{\hspace{0.17em}days}$