According to the church calendar, there are two thanksgiving days in a year; It's the Feast of Harvest and Thanksgiving Day. 

The Feast of Harvest is a feast derived from the Old Testament, but Thanksgiving Day is not a feast derived from the Bible, but was originated by Puritans in the United States. The Feast of Harvest is also called the Feast of first-fruits, which means ‘the season of harvesting the first ripe fruits.’ Therefore, the Feast of Harvest is a season to give thanks to God by harvesting the first ripe fruits of the year's crops, barley and wheat. Feast of Harvest symbolizes ending the first half of the year with thanksgiving and starting the second half with thanksgiving.

 Let me tell you a few words about thanksgiving in the hope that you will all become believers who are thankful with your heart, with your lips, with your material things, and with your whole body, and that your entire life changes. 1. You need to create a circuit of thanksgiving. These days, brain science has developed, and a lot of knowledge and data that was previously unknown is being published. 

Among them, there are many articles that medically prove how important an attitude of thanksgiving is to human life. For example, serotonin and dopamine, which are known as hormones that affect human emotions, are known as hormones that regulate human mood. Among these, serotonin is known to be involved in small joys and the joy felt in everyday life, so it is nicknamed the happiness hormone.

Kulingana na kalenda ya kanisa, kuna siku mbili za shukrani kwa mwaka: Sikukuu ya Mavuno na Siku ya Shukrani.

Sikukuu ya Mavuno ni sikukuu inayotokana na Agano la Kale, lakini Siku ya Shukrani si sikukuu ya Biblia; ilianzishwa na Wapuritani nchini Marekani. Sikukuu ya Mavuno huitwa pia Sikukuu ya Malimbuko, yaani “msimu wa kuvuna matunda ya kwanza yaliyoiva.” Kwa hiyo, ni wakati wa kumshukuru Mungu kwa kuvuna mazao ya kwanza yaliyoiva ya mwaka, kama vile shayiri na ngano. Sikukuu ya Mavuno huashiria kumaliza nusu ya kwanza ya mwaka kwa shukrani na kuanza nusu ya pili kwa shukrani.

Ningependa kusema machache kuhusu shukrani, nikitumaini kwamba nyote mtakuwa waumini wanaoshukuru kwa mioyo yenu, kwa maneno yenu, kwa mali zenu na kwa miili yenu yote, na kwamba maisha yenu yote yatabadilika. 1. Unahitaji kujenga mzunguko wa shukrani. Siku hizi, sayansi ya ubongo imeendelea, na maarifa na data nyingi ambazo hapo awali hazikujulikana zinachapishwa.

Miongoni mwa machapisho hayo, mengi yanaonyesha kwa ushahidi wa kitabibu jinsi mtazamo wa shukrani ulivyo muhimu katika maisha ya mwanadamu. Kwa mfano, serotonini na dopamini ni homoni zinazojulikana kuathiri hisia za binadamu na kudhibiti hali ya moyo. Serotonini huhusishwa na furaha ndogo ndogo za maisha ya kila siku, ndiyo maana imepewa jina la utani “homoni ya furaha.”