The unusual daytime F-region Field-Aligned Irregularities (FAIs) were observed by the HCOPAR and the satellites at low latitudes on 13 June 2022. These irregularities survived from night-time to the following afternoon at 15:00 LT. During daytime. they appeared as fossil structures with low Doppler velocities and narrow spectral widths. https://giantrobos.shop/product-category/in-print/