“Time is not a series of eternal recurrences in which nothing ever ultimately changes. Cyclical time is deeply conservative; covenantal time is profoundly revolutionary. Both find their expression in the counting of the Omer.” — Rabbi Jonathan Sacks
When is Sefirat HaOmer 2026
16 Nisan - 5 Sivan
5786
Begins: Sundown on Thursday 2 April 2026
Ends: Nightfall on Thursday 21 May 2026
Videos on Sefirat HaOmer
Ways of Counting Time: The Omer Controversy
Rabbi Sacks delivered this shiur to over 500 yeshiva and seminary students in Jerusalem on Wednesday 18th May 2016. The...
The Controversy of the Omer
In May 2013, as part of the Bnei Akiva Limmud programme, the Chief Rabbi gave a talk at the Bnei...
Read about Sefirat HaOmer
From The Archives
Essays and writings from Rabbi Sacks' extensive body of work
SHORT THOUGHTS & ACTIVITIES
Omer Calendar
On the second night of Pesach, we begin counting the Omer. For 49 consecutive days, we strive to follow the...
SHORT THOUGHTS & ACTIVITIES
Counting Towards Shavuot: Daily Omer Questions & Answers
"So when we start bringing the omer, we know we’re on our way to freedom." – Rabbi Lord Jonathan Sacks zt"l...
CONTINUING RABBI SACKS' CONVERSATION
Learning for Lag B'Omer
The ritual of counting the Omer takes place over 7 weeks (from 2nd night Pesach until Shavuot). The mitzva involves...
ARTICLES, SHIURIM
Counting Time
The human body contains 100 trillion cells. Within each cell is a nucleus. Within each nucleus is a double copy...
ARTICLES, SHIURIM
The Practical Implications of Infinity
What is mysticism? The word conjures up connotations of lofty abstraction, other-worldly meditation, abstruse speculations into the meaning of existence...
From Covenant & Conversation
The series of weekly commentary essays on the Torah by Rabbi Sacks
BEHAR • 5774, 5781
Think Long
In last week’s parsha and this there are two quite similar commands, both of which have to do with counting...
EMOR • 5768
Counting Time
The human body contains 100 trillion cells. Within each cell is a nucleus. Within each nucleus is a double copy...