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Ramadan day calculator

Work out which day of Ramadan any date is, which third of the month it sits in, and whether it falls in the last ten nights.

The date you want to check

Defaults to today

When Ramadan starts

The date announced where you are. The estimate below is only a placeholder.

Length of the month

This date is not something a calculator can know

Ramadan begins on the sighting of the new crescent and is announced locally, so countries differ by a day and sometimes two. The date filled in here is calculated from the tabular Islamic calendar as a placeholder. Replace it with the date announced where you are as soon as you have it.

The same goes for the length: whether the month runs 29 or 30 days is not settled until the evening of the 29th.

Day of Ramadan

Set the first day of fasting and the date you want to check.

How the day number is worked out

It is a count of days from the first fast. That makes the answer entirely dependent on the start date, which is why this tool asks for it rather than assuming one. Ramadan begins on a local announcement, and if your country started a day later than a calculated estimate, every day number moves with it.

The last ten days

These are the final ten of the month, days 21 to 30 when the month runs thirty days, and 20 to 29 when it runs twenty-nine. The length therefore matters as much as the start date, and it is not settled until the evening of the 29th, so it is offered as a setting too.

Nights come before days

In the Islamic reckoning a day begins at Maghrib rather than at midnight. So the night of the 27th is the night that starts at sunset at the end of the 26th day and runs through to Fajr. Anyone planning to stay up for a particular night needs that a day earlier than the calendar number suggests.

Counting the odd nights

The odd nights of the last ten are commonly given as the 21st, 23rd, 25th, 27th and 29th, counted forward from the start of the month. There is also a practice of counting backwards from the end, which lands on a different set when the month runs twenty-nine days. This tool shows the forward count and says so rather than presenting it as the only reckoning.

Questions

Why do I have to enter the start date?
Because the day number depends entirely on it, and Ramadan's start is announced locally rather than calculated. If your country began a day later than the calculated estimate, every day number shifts with it. The tool fills in an estimate so it has something to work from, and expects you to correct it.
Which days are the last ten?
The final ten days of the month, so days 21 to 30 if the month runs 30 days and days 20 to 29 if it runs 29. That is why the tool asks for the length, getting it wrong moves the whole window by a day.
Which are the odd nights?
Counting forward from the start of the month, the odd-numbered days within the last ten: the 21st, 23rd, 25th, 27th and 29th. Some count backwards from the end of the month instead, which produces a different set when the month runs 29 days. Both practices exist and this tool shows the forward count.
Does the night of the 27th mean the night before or after the 27th day?
The night comes first. In the Islamic reckoning a day begins at Maghrib, so the night of the 27th starts at sunset at the end of the 26th day and runs until Fajr. This trips up a lot of people planning to stay up.
What are the three thirds?
The month is commonly spoken of in three parts of ten days each. This tool counts them as days 1 to 10, 11 to 20 and the remainder, so in a 29-day month the last part is nine days rather than shortening the first two.

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